A cylindrical or rectangular 'tube' used to move air either from exhaust or intake, and for distributing warm air from the heating plant to rooms, or air from a conditioning device or as cold air returns. The installation is referred to as 'duct work.' Found on http://www.encyclo.co.uk/local/20933

[n] - a continuous tube formed by a row of elongated cells lacking intervening end walls 2. [n] - a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance 3. [n] - an enclosed conduit for a fluidFound on http://www.webdictionary.co.uk/definition.php?query=duct

• (n.) Any tube or canal by which a fluid or other substance is conducted or conveyed. • (n.) One of the vessels of an animal body by which the products of glandular secretion are conveyed to their destination. • (n.) Guidance; direction. • (n.) A large, elongated cell, either round or prismatic, usually found associated with wo...Found on http://thinkexist.com/dictionary/meaning/duct/

<anatomy> A passage with well defined walls, especially a tube for the passage of excretions or secretions. ... Synonym: ductus. ... Origin: L. Ductus from ducere = to draw or lead ... (18 Nov 1997) ... Found on http://www.encyclo.co.uk/local/20973

[anatomy] In anatomy and physiology, a duct is a circumscribed channel leading from an exocrine gland or organ. ==Types of ducts== Examples include: ==Duct system== As ducts travel from the acinus which generates the fluid to the target, the ducts become larger and the epithelium becomes thicker. The parts of the system are classified as fo...Found on http://en.wikipedia.org/wiki/Duct_(anatomy)

[HVAC] Ducts are used in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. The needed airflows include, for example, supply air, return air, and exhaust air.Ducts commonly also deliver ventilation air as part of the supply air. As such, air ducts are one method of ensuring acceptable indoor air quality as well as ...Found on http://en.wikipedia.org/wiki/Duct_(HVAC)

[industrial exhaust] Industrial exhaust ducts are pipe systems that connect hoods to industrial chimneys through other components of exhaust systems like fans, collectors, etc. Ducts are low-pressure pneumatic conveyors to convey dust, particles, shavings, fumes, or chemical hazardous components from air in the vicinity to a shop floor or a...Found on http://en.wikipedia.org/wiki/Duct_(industrial_exhaust)

Duct noun [ Latin ductus a leading, conducting, conduit, from ducere , ductum , to lead. See Duke , and confer Douche .] 1. Any tube or canal by which a fluid or other substance is conducted or conveyed. 2. (Anat.) One of the vessels of an an...Found on http://www.encyclo.co.uk/webster/D/128

A channel for holding and protecting conductors and cables, made of metal or an insulating material, usually circular in cross section like a pipe. Also referred to as Conduit.Found on http://www.youngco.com/young2.asp?ID=4&Type=3

A round or rectangular tube, generally constructed of sheet metal, fiberglass board, or a flexible plastic-and-wire composite, located within a wall, floor, and ceiling that distributes heated or cooled air in buildings. Think of your ductwork as huge hoses, delivering hot air or conditioned air i...Found on http://www.daviddarling.info/encyclopedia/D/AE_duct.html

duct 1. A conduit, channel, or tube, for the conveyance of water or other liquid. 2. A pipe or tube through which air is conveyed for cooling, ventilation, etc. 3. A conduit for an electric cable or the like. 4. A tube or canal in the animal body, by which the bodily fluids are conveyed. Formerly used in a wide sense, so as to include the bloo...Found on http://www.wordinfo.info/words/index/info/view_unit/2734/5

Duct: A passage or a tube with well-defined walls suitable for the conveyance of air or liquids, as the bile duct and the pancreatic duct. Duct is a contraction of the New Latin word ductus. The Romans, however, used the word canalis to designate a conduit.Found on http://www.medterms.com/script/main/art.asp?articlekey=10672

Here used to describe a channel within the thickness of a wall or other structural component, used to accommodate pipes or cables, or for ventilation or heating.
Found on http://www.encyclo.co.uk/local/20938

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